From: technique at ircf dot fr
Operating system: Linux Ubuntu
PHP version: 5.2CVS-2008-01-14 (snap)
PHP Bug Type: Scripting Engine problem
Bug description: Cast problem with the equal operator (==)
Description:
------------
I have noticed that the equal operator will systematically try to cast
expressions as integers, even when it is useless.
This may cause problems like this (see the code below).
Wouldn't be better to cast only one operand ONLY if the two operands are
not of the same type ? For example :
"1" == 1 , would cast the right operand (1) as a string and then compare
it with the first
"123" == "456", would not cast any operand because they already have the
same type
I know that this issue can be solved using the identity operator (===) but
I find weird that "001" == "0001" returns true, or am I missing something ?
Reproduce code:
---------------
<?php
if ("0001" == "000001"){
echo "Impossible !!!";
}
?>
Expected result:
----------------
Nothing
Actual result:
--------------
Impossible !!!
--
Edit bug report at http://bugs.php.net/?id=43839&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=43839&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=43839&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=43839&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=43839&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=43839&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=43839&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=43839&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=43839&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=43839&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=43839&r=support
Expected behavior: http://bugs.php.net/fix.php?id=43839&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=43839&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=43839&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=43839&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=43839&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=43839&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=43839&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=43839&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=43839&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=43839&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=43839&r=mysqlcfg
